In newly discovered footage of Swedish Holocaust hero Raoul Wallenberg — the only known instance that he was caught on film — the man who would go on to save tens of thousands of Jews can be seen instructing army recruits at a firing range in 1940. It is the only known footage of Wallenberg, who, as a Swedish diplomat in Hungary, was credited with helping at least 20,000 Jews escape the Holocaust. He is believed to have died in Soviet captivity, but when and how remains unclear. In the 25-second clip, Wallenberg can be seen at a central Stockholm location in what researchers say was the summer or autumn of 1940. READ MORE AND VIEW VIDEO